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spayn [35]
3 years ago
10

Overall, how has science impacted human health?

Biology
1 answer:
mixas84 [53]3 years ago
8 0

Answer:

The correct answer is: <em>C. Increased average lifespan to 78 in the US.</em>

Explanation:

Science has impacted human health by increasing the average lifespan to 78 in the US. Over the last couple of decades, the life expectancy of Americans has increased significantly than what it was 200 years ago. This can be attributed to:

1. Vaccinations- Since the invention of vaccinations, diseases such as tuberculosis, cholera and polio which were major causes of death 200 years ago have virtually been eradicated in the US.

2. Abundant and safer foods available- Commercial and large scale farming has made a wide variety of nutritious foods easier to obtain.

3. Improved sanitation- Safer drinking water, sewage treatment and stricter food inspection has significantly reduced the rate of illnesses due to poor hygiene and sanitation.  

In these ways, science has impacted human health by increasing the average lifespan to 78 in the US.

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a wild-type fruit fly: a wild-type fruit fly: exhibits the most rare phenotype in the population. exhibits a mutant phenotype. e
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A wild-type fruit fly exhibits the most common phenotype in the population.

Fruit flies of the wild type are yellow-brown in colour with brick-red eyes and longitudinal black rings across the abdomen.

An organism or strain displaying the wild type is one that has a phenotype, genotype, or gene that predominates in a natural population of organisms or strain of organisms as opposed to that of naturally occurring or laboratory mutant forms.

The genotype and phenotype standards of reference are wild type. Wild type is regarded as the norm and neither the dominant nor the recessive. In compared to the wild type, mutant alleles are either dominant or recessive.

Fruit flies are distinguished by their tiny size, brown bodies, and red eyes. While these pests themselves are not harmful, they may be a sign of unclean living conditions in the home.

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